diff --git a/.github/workflows/docker-image-ci.yml b/.github/workflows/docker-image-ci.yml
index 226e3f4..3c0680b 100644
--- a/.github/workflows/docker-image-ci.yml
+++ b/.github/workflows/docker-image-ci.yml
@@ -4,6 +4,8 @@ on:
   pull_request:
     types: [opened, synchronize]
   push:
+    branches:
+    - master
 
 jobs:
   test:
diff --git a/README.md b/README.md
index 40fd6ff..6ecc483 100644
--- a/README.md
+++ b/README.md
@@ -46,6 +46,7 @@ The above example step will deploy `./public` directory to `gh-pages` branch.
   - [⭐️ Suppressing empty commits](#%EF%B8%8F-suppressing-empty-commits)
   - [⭐️ Keeping existing files](#%EF%B8%8F-keeping-existing-files)
   - [⭐️ Deploy to external repository](#%EF%B8%8F-deploy-to-external-repository)
+  - [⭐️ Script mode](#%EF%B8%8F-script-mode)
 - [Tips and FAQ](#tips-and-faq)
   - [⭐️ Use the latest and specific release](#%EF%B8%8F-use-the-latest-and-specific-release)
   - [⭐️ How to add `CNAME`](#%EF%B8%8F-how-to-add-cname)
@@ -196,7 +197,7 @@ By pulling docker images, you can reduce the overall execution time of your work
 
 ### ⭐️ `GITHUB_TOKEN`
 
-> **NOTES**: Do not use `GITHUB_TOKEN`.
+> ⚠️ **NOTES**: `GITHUB_TOKEN` works only on a **private** repository.
 >
 > This action supports `GITHUB_TOKEN` but it has some problems to deploy to GitHub Pages. GitHub team is investigating that. See [Issue #9]
 
@@ -247,6 +248,7 @@ For example:
 
 By default, your files are published to the repository which is running this action.
 If you want to publish to another repository on GitHub, set the environment variable `EXTERNAL_REPOSITORY` to `<username>/<external-repository>`.
+This option is available from `v2.5.0`.
 
 For example:
 
@@ -265,6 +267,26 @@ When you use `ACTIONS_DEPLOY_KEY`, set your private key to the repository which
 
 Be careful, `GITHUB_TOKEN` has no permission to access to external repositories.
 
+### ⭐️ Script mode
+
+From `v2.5.0`, we can run this action as a shell script.
+There is no Docker build or pull step, so it will start immediately.
+
+- `ACTIONS_DEPLOY_KEY` requires `SCRIPT_MODE: true`
+- `*_TOKEN` do not require `SCRIPT_MODE`
+
+```yaml
+- name: Deploy
+  env:
+    ACTIONS_DEPLOY_KEY: ${{ secrets.ACTIONS_DEPLOY_KEY }}
+    PUBLISH_BRANCH: gh-pages
+    PUBLISH_DIR: ./public
+    SCRIPT_MODE: true
+  run: |
+    wget https://raw.githubusercontent.com/peaceiris/actions-gh-pages/v2.5.0/entrypoint.sh
+    bash ./entrypoint.sh
+```
+
 <div align="right">
 <a href="#table-of-contents">Back to TOC ☝️</a>
 </div>
diff --git a/entrypoint.sh b/entrypoint.sh
index 482a10e..d72e63d 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -28,10 +28,16 @@ if [ -n "${ACTIONS_DEPLOY_KEY}" ]; then
 
     print_info "setup with ACTIONS_DEPLOY_KEY"
 
-    mkdir /root/.ssh
-    ssh-keyscan -t rsa github.com > /root/.ssh/known_hosts
-    echo "${ACTIONS_DEPLOY_KEY}" > /root/.ssh/id_rsa
-    chmod 400 /root/.ssh/id_rsa
+    if [ -n "${SCRIPT_MODE}" ]; then
+        print_info "run as SCRIPT_MODE"
+        SSH_DIR="${HOME}/.ssh"
+    else
+        SSH_DIR="/root/.ssh"
+    fi
+    mkdir "${SSH_DIR}"
+    ssh-keyscan -t rsa github.com > "${SSH_DIR}/known_hosts"
+    echo "${ACTIONS_DEPLOY_KEY}" > "${SSH_DIR}/id_rsa"
+    chmod 400 "${SSH_DIR}/id_rsa"
 
     remote_repo="git@github.com:${PUBLISH_REPOSITORY}.git"
 
@@ -44,7 +50,7 @@ elif [ -n "${PERSONAL_TOKEN}" ]; then
 elif [ -n "${GITHUB_TOKEN}" ]; then
 
     print_info "setup with GITHUB_TOKEN"
-    print_error "Do not use GITHUB_TOKEN, See #9"
+    print_error "GITHUB_TOKEN works only private repo, See #9"
 
     if [ -n "${EXTERNAL_REPOSITORY}" ]; then
         print_error "can not use GITHUB_TOKEN to deploy to a external repository"
@@ -70,7 +76,7 @@ fi
 
 remote_branch="${PUBLISH_BRANCH}"
 
-local_dir="${HOME}/$(tr -cd 'a-f0-9' < /dev/urandom | head -c 32)"
+local_dir="${HOME}/ghpages_${RANDOM}"
 if git clone --depth=1 --single-branch --branch "${remote_branch}" "${remote_repo}" "${local_dir}"; then
     cd "${local_dir}"